Difference between revisions of "Resolving power (in mass spectrometry)"
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| − | http://goldbook.iupac.org/ | + | '''Resolving power (mass spectrometry)''' |
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| + | http://goldbook.iupac.org/R05321.html | ||
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| + | The ability to distinguish between ions differing in the quotient mass/charge by a small increment. It may be characterized by giving the peak width, measured in mass units, expressed as a function of mass, for at least two points on the peak, specifically at fifty percent and at five percent of the maximum peak height. | ||
'''mass resolving power''' | '''mass resolving power''' | ||
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| + | http://goldbook.iupac.org/M03730.html | ||
Commonly and also acceptably defined in terms of the overlap (or 'valley') between two peaks. Thus for two peaks of equal height, masses and , when there is overlap between the two peaks to a stated percentage of either peak height (10% is recommended), then the resolving power is defined as . The percentage overlap (or 'valley') concerned must always be stated. | Commonly and also acceptably defined in terms of the overlap (or 'valley') between two peaks. Thus for two peaks of equal height, masses and , when there is overlap between the two peaks to a stated percentage of either peak height (10% is recommended), then the resolving power is defined as . The percentage overlap (or 'valley') concerned must always be stated. | ||